red cross laser module type : cb650-5-3(5) main technical parameters: size : 16mm x 58mm wavelength : 650nm operating voltage : dc 3 or 5v operating current :less than50ma divergence : 0.3mrad line thickness : 1.5mm verticality : +/-1sec output aperture :dia 6.8mm output power : 5mw optics : glass lens both sides ar coated operating distance : 3.5m wire length : 2 x 100mm(or connector wire and plugs) operating temperature : -10 celsius degree +40 celsius degree storage temperature : - 40 celsius degree +80 celsius degree life time : more than5000 hours accessories choose and buy : lps-1 power supply